#512 Hasan Colakoglu

Sold half of TEB Bank in Turkey, the country's tenth-largest in terms of assets, to BNP Paribas for $217 million. Holding company, which has roots dating back to the 1930s, also has operations in steel, shipping, trading and power generation. Known for treading cautiously into new business segments and for having little debt. Serves on board of prestigious London Business School.